Mirtazapine Prescription Dog Digestive Medications | Petco

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Health & Wellness
My dog took mirtazapine early. Is an extra dose okay for him?
Mirtazipine is typically well tolerated in dogs. You may see sedation or drowsiness. Symptoms that should be addressed by your vet include low blood pressure or increased heart rate. Given his age, you may want to have him checked out at the nearest veterinary ER or put a call in to the Pet Poison Helpline ( (855) 764-7661 ). There is a fee for this call, but they will have toxicologists and doctors who can tell you definitively if Cody is at any risk.
Updated on September 24th, 2025
Health & Wellness
Is mirtazapine safe for my pet's blood pressure with amlodipine?
Mirtazapine is safe to use with amlodipine. Mirtazapine at high doses could potentially decrease blood pressure, but at typically prescribed doses, it is safe to give with amlodipine. Your vet may want to monitor blood pressure a few days after starting the mirtazapine just to be sure its all looking good. Thanks for asking Petco Pet Education Center, formerly Petcoach!
Updated on September 24th, 2025
Vet Q & A
Senior dog restless, crying after mirtazapine. Is it serotonin syndrome?
I don't think this is serotonin syndrome. That dose is well within the safe range for Brandy. It may be anxiety, pain, related to another medical issue, or even cognitive dysfunction syndrome in dogs. I would recommend discussing this new issue with Brandy's vet. They may have some more insight on what could be the cause based on her medical history and recent physical exam. It may also be that the mirtazapine is not a good match with any other medications she is on. You could try a different appetite stimulant, called Entyce, which is specifically labeled for dogs.
Updated on September 24th, 2025
Vet Q & A
My dog accidentally took a double Mirtazapine dose. Is she okay?
The dosing does go up to 1mg/kg every 12 hours. So Angel's dose at this would be 20mg twice daily, so she should be absolutely fine. I hope this helps! Please let me know if you have any further questions or concerns and I would be more than happy to help you further.
Updated on September 24th, 2025
Vet Q & A
My cat ate my antidepressant. She's drowsy. Is this an emergency?
Mirtazapine does have a side effect of drowsiness or sedation in pets. It is commonly used in cats as an appetite stimulant. 30mg would be 4 times higher than I normally use, and this overdosage can cause: 57% vocalizing, 38% agitated, 23% vomiting, 21% tachycardic, 15% ataxic and 11% lethargic. The symptoms can last a little longer than 72 hours. As long as Dolly is still eating and drinking normally, I would continue to watch her. If the she is still not completely normal in a day or two, she may need a checkup with a vet.
Updated on September 24th, 2025